Are crypto currencies the future? Ive been hearing a lot of buzz about bitcoin, good and bad. Do you, or would you, use bitcoin? Or some other crypto currency?

Cryptocurrency - Wikipedia, the free encyclopedia

At first bitcoin sounds attractive because of how open resourced it is. But apparently its recommended that you have specialized hardware to "mine" bitcoins. Doesn't that mean bitcoins in the future will be mostly owned by certain groups that have every computer hardware they can dream of? Like NASA or the military?

Anyways, Im just trying to understand it. And wondering if I should accept crypto currency payments for my art...